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首页> 外文期刊>Chemosphere >Toxicological effects of transition metal-doped titanium dioxide nanoparticles on goldfish (Carassius auratus) and common carp (Cyprinus carpio)
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Toxicological effects of transition metal-doped titanium dioxide nanoparticles on goldfish (Carassius auratus) and common carp (Cyprinus carpio)

机译：过渡金属掺杂的二氧化钛纳米粒子对金鱼（Carassius auratus）和鲤鱼（Cyprinus carpio）的毒理作用

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摘要

The aim of present study was to assess the toxicological effects of transition metal-doped titanium dioxide nanoparticles (TiO2 NPs) on histopathological changes, behavioral patterns, and antioxidant responses of goldfish (Carassius auratus) and common carp (Cyprinus carpio). The synthesized nanoparticles were confirmed by Transmission Electron Microscopy, Field Emission Scanning Electron Microscopy, X-ray diffraction, UV-visible, and Vibration Sample Magnetometer. Fish in four experimental groups exposed to sub-lethal concentrations of pure TiO 2 NPs (10 mg L-1), chromium (Cr), iron (Fe), and nickel (Ni) doped TiO2 NPs for seven days. Statistical analysis of oxidative stress responses in gills showed significant differences in superoxide dismutase, total antioxidant capacity, and malondialdehyde parameters between two species and in all parameters than glutathione peroxidase between experimental groups and control group. In intestine, no significant difference was observed among groups, but oxidative responses were markedly different in all parameters among fish species. The histopathological analysis showed hyperplasia, fusion, and aneurism in the gills as well as degeneration, integration of villi, necrosis and erosion of the intestine. Our findings indicated that compare to pure TiO2 NPs, exposure to transition metals-doped TiO2 NPs induced oxidative stress and histopathological changes in both fish species. (C) 2018 Elsevier Ltd. All rights reserved.
机译：本研究的目的是评估过渡金属掺杂的二氧化钛纳米颗粒（TiO2 NPs）对金鱼（Carassius auratus）和鲤鱼（Cyprinus carpio）的组织病理学变化，行为模式和抗氧化反应的毒理作用。通过透射电子显微镜，场发射扫描电子显微镜，X射线衍射，UV可见光和振动样品磁强计确认合成的纳米颗粒。四个实验组中的鱼暴露于亚致死浓度的纯TiO 2 NPs（10 mg L-1），铬（Cr），铁（Fe）和镍（Ni）掺杂的TiO2 NPs达七天。 g的氧化应激反应的统计分析表明，实验组和对照组之间，两种物种之间的超氧化物歧化酶，总抗氧化能力和丙二醛参数存在显着差异，并且所有参数均比谷胱甘肽过氧化物酶显着不同。在肠中，各组之间未观察到显着差异，但是在鱼类之间的所有参数中，氧化反应均存在显着差异。组织病理学分析显示g中有增生，融合和动脉瘤以及绒毛的变性，融合，坏死和肠糜烂。我们的发现表明，与纯TiO2 NPs相比，暴露于过渡金属掺杂的TiO2 NPs会引起两种鱼类的氧化应激和组织病理学变化。 （C）2018 Elsevier Ltd.保留所有权利。

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